I am just starting to learn about rigid body physics and I am working with a simple file (uploaded) which contains two objects, a rack & pinion gear set.
The pinion is set to rotate only (Y axis) and the rack is limited to move only up and down (Z axis).
When I animate, I expect the rack to fall down, causing the gear to turn. Instead the gear rotates first and in the wrong direction, and the rack moves up. The two pass through one another rather than keeping the teeth coordinated.
I keep adjusting settings, but nothing works. I reversed gravity but that had no effect.
Thanks for any clues.
Attachments
GEARS 2.blend (744 KB)